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Which lamp has the highest energy efficiency?

AIncandescent Lamp

BLED Lamp

CCFL

DArc Lamp

Answer:

B. LED Lamp

Read Explanation:

  • LED stands for light emitting diode.
  • LEDs are used as indicator lamps in many devices, and are increasingly used for lighting.
  • These have lower energy consumption, longer lifetime, smaller size, faster switching as compared to other light sources used in our daily life.

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  3. (iii) Reversing current after every half rotation leads to continuous rotation of coil
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